Incorrect metrics reporting of transcations metrics.
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Key: HDFS-920
URL: https://issues.apache.org/jira/browse/HDFS-920
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Affects Versions: 0.20.1, 0.20.2, 0.21.0, 0.22.0
Reporter: Ravi Phulari
Fix For: 0.20.2
Transaction metrics *transactions.getPreviousIntervalNumOps()* reported for
name node edit logs are reporting incorrect metrics.
Transaction metrics should report 3 transactions upon creating a file of 1
block size - ( 1 for create file + 1 for one block write + 1 for close file )
which is reported correctly.
Similarly metrics should report 12 transactions upon creating a file of 10
block size - ( 1 for create file + 10 for twelve block write + 1 for close file
) which is reported incorrectly as 3.
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